Model and name

measurement range

precision

stability

3351DP

Low, medium, and high differential pressure transmitter

0-1.24 kPa to 186.45 kPa

(Range codes 3, 4, 5)

±0.2％

<0.1% FS/year

3351DP

Large differential pressure transmitter

0-117.21 kPa to 6890 kPa

(Range codes 6, 7, 8)

±0.25％

<0.1% FS/year

3351HP

High static pressure differential pressure transmitter

0-6.22 kPa to 2070 kPa

(Range codes 4, 5, 6, 7)

±0.25％

<0.1% FS/year

3351GP

Pressure transmitter

0-1.24 kPa to 41370kPa

(Range code 3-0)

±0.25％

<0.1% FS/year

3351GP/DP

Remote differential pressure transmitter

0-6.22 kPa to 6890 kPa

(Range codes 4, 5, 6, 7, 8)

±0.5％

<0.25% FS/year

3351AP

Absolute pressure transmitter

0-6.77 kPa to 6890 kPa

(Range codes 4, 5, 6, 7, 8)

±0.25％

<0.1% FS/year

3351DR

Micro differential pressure transmitter

0-0.12 kPa to 1.49 kPa

(Range code 2)

±0.5％

<0.25% FS/year

● Temperature impact

At the maximum range,

Change every 28 ℃

Range code

Or name

Accuracy class

Level 0.2

0.25 level

Level 0.5

2

/

/

≤±0.54%/

3

≤±0.20%

≤±0.30%

≤±0.45%

4. 5, 6, 7, 8

≤±0.20%

≤±0.20%

≤±0.30%

Remote transmission, liquid level

/

/

≤±0.60%

●Static pressure influence

(At maximum range)

Range code

Or name

Accuracy class

Level 0.2

0.25 level

Level 0.5

2

/

/

≤±1%

3

≤±0.2%

≤±0.5%

≤±0.6%

4. 5, 6, 7, 8

≤±0.20%

≤±0.30%

≤±0.6%

4. 5, 6, 7 (high static pressure)

/

≤±2%

≤±2.5%

※performance metrics

● Structural materials

Isolation membrane: 316 stainless steel, Hastelloy C, Monel alloy, tantalum.

O-ring (medium contact area): Fluororubber.

Flange: 316 stainless steel.

Filling fluid: silicone oil or inert oil.

Electrical casing: polyurethane baked paint low copper cast aluminum alloy.

● Pressure connector

The connecting screw hole on the pressure chamber is 1/4NPT, and the connecting screw hole on the impulse joint is 1/2NPT. The center distance is shown in the external dimension drawings of various models.

The signal cable connection screw hole is M20 × 1.5.

● Shell protection level

IP65

● Weight

3.9kg (excluding options, except for flanged transmitters).

FB3351DP

Differential pressure transmitter

┆

code name

Measurement range (kPa)

┆

3

0-1.24~7.46 (maximum working pressure 6.9MPa)

┆

4

0－6.22～37.29

┆

5

0－31.08～186.45

┆

6

0－117.21～689.48

┆

7

0－345～2068

┆

8

0－1170～6890

┆

┆

code name

output

┆

┆

S

Intelligent 4-20mADC two-wire system+fieldbus HART protocol

┆

┆

┆

code name

Structural materials

┆

┆

┆

flange joint

Exhaust/Drain Valve

Isolation membrane

Fill with liquid

┆

┆

┆

22

316 stainless steel

316 stainless steel

316 stainless steel

silicone oil

┆

┆

┆

23

316 stainless steel

316 stainless steel

Hastelloy C

┆

┆

┆

24

316 stainless steel

316 stainless steel

Monel

25

316 stainless steel

316 stainless steel

Tantalum

┆

┆

┆

33

Hastelloy C

Hastelloy C

Hastelloy C

┆

┆

┆

35

Hastelloy C

Hastelloy C

Tantalum

┆

┆

┆

44

Monel

Monel

Monel

┆

┆

┆

┆

code name

Maximum working pressure (MPa)

┆

┆

┆

┆

B-

4

┆

┆

┆

┆

C-

10

┆

┆

┆

┆

D-

14

┆

┆

┆

┆

┆

code name

Options

┆

┆

┆

┆

┆

M3

3 1/2LCD digital display header

┆

┆

┆

┆

┆

B1

Pipe bending bracket

┆

┆

┆

┆

┆

B2

Board mounted bending bracket

┆

┆

┆

┆

┆

B3

Pipe mounted flat bracket

┆

┆

┆

┆

┆

D0

The relief valve is located at the rear of the pressure chamber

┆

┆

┆

┆

┆

D1

The side relief valve is located at the upper part of the pressure chamber

┆

┆

┆

┆

┆

D2

The side relief valve is located at the lower part of the pressure chamber

┆

┆

┆

┆

┆

C3

1/2NPT taper pipe female threaded joint

┆

┆

┆

┆

┆

C1

1/2NPT pressure transition joint rear welded with a φ 14 pressure pipe

┆

┆

┆

┆

┆

C2

T-shaped threaded joint M20 × 1.5

┆

┆

┆

┆

┆

d

Explosion proof ExdIICT6

┆

┆

┆

┆

┆

i

Intrinsically safe ExiaICT6

FB3351DP

4

S

22

C-

M3

(Factory range)

Example of transmitter selection